Wind-chest or bellows-box attached to hearths or



UNITED STATES PATENT OFFICE.

CHARLES FOSTER, OF ROCHESTER, NEW YORK.

WIND-CHEST OR BELLOWS-BOX ATTACHED T0 HEARTHS OR BLACKSIVIITHS FORGES.

Speccation of Letters Patent No. 2,088, dated May 11, 1841.

T0 all whom t may concern p Be it known that I, CHARLES FosTE-R` of the'city o-f Rochester, in the county of Monroe and State of New York, haveinvented a new and useful -Improvement in Tops or Covers ofBellows-Boxes for Blowing the Fires of Forges and Furnaces; and I dohereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part of this specification,in which- Figure l is a view in perspective of the box. Fig. 2 is adrawing of the outside of the cover or upper part o-f the box, and Fig.3 is a drawing of the interior of the'box without the cover.

The nature o-f my invention consists in this, that I construct a bellowsbox inwardly so as to produce two equal currents of air, and that whenair has entered the chamber in any bellows box, I conduct and bring suchair to act upon the hre placed above the box by two fiat or oblongtubes, standing obliquely, one leading from each end of the chamber andthus I concentrate the draft of air and make it act on the tire far morepowerfully and efficiently than by any contrivance now known.

To enable others skilled in machinery to make and use said improvedbellows box I will proceed to describe its construction and operation.

I first construct a box in size twelve by eight inches or of any desireddimensions, made of cast or sheet iron or other metal as desired. (SeeFig. l.) lIn this box I place partitions so that there will be anoblongchamber (a, Z), on Fig. 3) with an opening or entrance to the same oneach side, (at c, c,

on Fig. At one end of the box and at each side, as far back as the saidopenings to the chamber, is a hall or passage for the air to pass, (7L,z', m, on Fig. 3.) At the last named end of the box a tube (fn, on Fig.3) connected with the bellows admits air to the said passage. In the topor cover of the box directly over the said chamber are two fiat oroblo-ng tubes standing oblique with the surface of the cover andinclining each toward the other (0 and fr on Fig. 2) and approaching asnear to each other as desired on the top having a regard to the distanceit is desired the focus of the currents of air should be above thetubes.

A box like the above is placed under the fire of a forge or furnace, thecoal being placed on the top of the box and. over and about the flattubes.

When a bellows is applied to the tube (n on Fig. 3) and made to blow,the air passes through said tube into the bellows box and then passes upthrough the flat tubes (0 and r on Fig. 2) and with great power blowsthe coal lying above the tubes. The cinders naturally fall and occupythe space between the two flat tubes.

I disclaim the original invention of the bellows box, and

What I claim as my invention, and desire to secure by Letters Patent,is'- The method above described of constructing'the top of the box byforming it with two oblong apertures or tubes inclined toward each otherfor the purpose of concentrating the draft of air and increasing itspower of action on the fires.

CHARLES FOSTER.

Witnesses:

RICHARD TEMPLE. MosEs CHAPIN.

